Date: Thu, 13 Jul 2006 21:09:02 +0200 From: Oliver Lehmann <lehmann@ans-netz.de> To: Sean McNeil <sean@mcneil.com> Cc: amd64@freebsd.org Subject: Re: NFS lockup when copying a "special" file Message-ID: <20060713210902.b393812e.lehmann@ans-netz.de> In-Reply-To: <1152815780.17757.4.camel@triton.mcneil.com> References: <20060713201434.a5335637.lehmann@ans-netz.de> <1152815780.17757.4.camel@triton.mcneil.com>
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Sean McNeil wrote:
>
> I used to have a similar problem and tracked it down to my NIC and
> hardware checksums. Would this happen to be an if_re device? Can you
> give ifconfig info and if hardware checksums are on, try your test with
> them turned off (RXCSUM and TXCSUM). You can try different combos of
> these if turning off both helps.
Yeah, it is indeed an on-board if_re:
re0: <RealTek 8169S Single-chip Gigabit Ethernet> port 0xe800-0xe8ff mem 0xcfffff00-0xcfffffff irq 16 at device 11.0 on pci0
miibus0: <MII bus> on re0
rgephy0: <RTL8169S/8110S media interface> on miibus0
rgephy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX, 1000baseTX-FDX, auto
re0: Ethernet address: 00:11:09:cf:e2:e1
re0: [FAST]
olivleh1@kartoffel olivleh1> ifconfig
re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=18<VLAN_MTU,VLAN_HWTAGGING>
inet6 fe80::211:9ff:fecf:e2e1%re0 prefixlen 64 scopeid 0x1
inet 10.0.1.51 netmask 0xffffff00 broadcast 10.0.1.255
ether 00:11:09:cf:e2:e1
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
plip0: flags=108810<POINTOPOINT,SIMPLEX,MULTICAST,NEEDSGIANT> mtu 1500
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
inet 127.0.0.1 netmask 0xff000000
olivleh1@kartoffel olivleh1> uname -a
FreeBSD kartoffel.salatschuessel.net 6.1-STABLE FreeBSD 6.1-STABLE #0: Fri Jul 7 18:40:18 CEST 2006 olivleh1@kartoffel.salatschuessel.net:/usr/obj/amd64-athlon64-6.1/usr/src/sys/KARTOFFEL amd64
How can I disable checksum offloading?
--
Oliver Lehmann
http://www.pofo.de/
http://wishlist.ans-netz.de/
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